Proxy Switcher is a powerful, professional-level proxy server searching, testing and managing software. It automatically downloads a proxy list from the Internet (displaying the country each proxy server resides in at the same time), analyzes whether it is available, and displays some status information like connection speed in real time. Especially, it allows you to quickly switch between network environments such as proxy connection and direct connection, which is very convenient.

Using shortcuts (Alt + Tab) to switch among multiple programs is very convenient, but we can't find any option about it in the system. Actually that's because it is hidden by Microsoft, yet we can easily customize the settings through 3rd party program Alt Tab Tuner VIII (successor of Alt+Tab Tuner).

Desktops (virtual desktop) is one of practical freeware utilities of Sysinternals Suite released by Microsoft Windows, it's lightweight, handy and portable,  so is very suitable for people who need multiple-window operations at the same time.